Traditional units of measurement (liquids)

Japan has traditionally used their own units of measurement for liquid (such as sake and soy sauce), called Shakkanhou (shakkan method). The measurements are:

shaku(勺):18ml

gou(合):180ml

shou(升)：1800ml

to(斗)：18L

koku(石)：180L

The production scale of a sake brewery is given in koku, with breweries ranging from as little as 100 koku to massive hundreds of thousands of koku. Normally sake is sold either in 4 gou (720ml) or 1 shou (1800ml) bottles.